1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>zip</title> 5<link rel="stylesheet" href="../../../../../../../../doc/src/boostbook.css" type="text/css"> 6<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 7<link rel="home" href="../../../../index.html" title="Chapter 1. Fusion 2.2"> 8<link rel="up" href="../metafunctions.html" title="Metafunctions"> 9<link rel="prev" href="join.html" title="join"> 10<link rel="next" href="pop_back.html" title="pop_back"> 11</head> 12<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 13<table cellpadding="2" width="100%"><tr> 14<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../../../boost.png"></td> 15<td align="center"><a href="../../../../../../../../index.html">Home</a></td> 16<td align="center"><a href="../../../../../../../../libs/libraries.htm">Libraries</a></td> 17<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> 18<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> 19<td align="center"><a href="../../../../../../../../more/index.htm">More</a></td> 20</tr></table> 21<hr> 22<div class="spirit-nav"> 23<a accesskey="p" href="join.html"><img src="../../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../metafunctions.html"><img src="../../../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="pop_back.html"><img src="../../../../../../../../doc/src/images/next.png" alt="Next"></a> 24</div> 25<div class="section"> 26<div class="titlepage"><div><div><h5 class="title"> 27<a name="fusion.algorithm.transformation.metafunctions.zip"></a><a class="link" href="zip.html" title="zip">zip</a> 28</h5></div></div></div> 29<h6> 30<a name="fusion.algorithm.transformation.metafunctions.zip.h0"></a> 31 <span class="phrase"><a name="fusion.algorithm.transformation.metafunctions.zip.description"></a></span><a class="link" href="zip.html#fusion.algorithm.transformation.metafunctions.zip.description">Description</a> 32 </h6> 33<p> 34 Zips sequences together to form a single sequence, whose members are 35 tuples of the members of the component sequences. 36 </p> 37<h6> 38<a name="fusion.algorithm.transformation.metafunctions.zip.h1"></a> 39 <span class="phrase"><a name="fusion.algorithm.transformation.metafunctions.zip.synopsis"></a></span><a class="link" href="zip.html#fusion.algorithm.transformation.metafunctions.zip.synopsis">Synopsis</a> 40 </h6> 41<pre class="programlisting"><span class="keyword">template</span><span class="special"><</span> 42 <span class="keyword">typename</span> <span class="identifier">Sequence1</span><span class="special">,</span> 43 <span class="keyword">typename</span> <span class="identifier">Sequence2</span><span class="special">,</span> 44 <span class="special">...</span> 45 <span class="keyword">typename</span> <span class="identifier">SequenceN</span> 46 <span class="special">></span> 47<span class="keyword">struct</span> <span class="identifier">zip</span> 48<span class="special">{</span> 49 <span class="keyword">typedef</span> <span class="emphasis"><em>unspecified</em></span> <span class="identifier">type</span><span class="special">;</span> 50<span class="special">};</span> 51</pre> 52<h6> 53<a name="fusion.algorithm.transformation.metafunctions.zip.h2"></a> 54 <span class="phrase"><a name="fusion.algorithm.transformation.metafunctions.zip.expression_semantics"></a></span><a class="link" href="zip.html#fusion.algorithm.transformation.metafunctions.zip.expression_semantics">Expression 55 Semantics</a> 56 </h6> 57<pre class="programlisting"><a class="link" href="zip.html" title="zip"><code class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">zip</span></code></a><span class="special"><</span><span class="identifier">Sequence1</span><span class="special">,</span> <span class="identifier">Sequence2</span><span class="special">,</span> <span class="special">...</span> <span class="identifier">SequenceN</span><span class="special">>::</span><span class="identifier">type</span> 58</pre> 59<p> 60 <span class="bold"><strong>Return type</strong></span>: A model of the most restrictive 61 traversal category of sequences <code class="computeroutput"><span class="identifier">Sequence1</span></code> 62 to <code class="computeroutput"><span class="identifier">SequenceN</span></code>. 63 </p> 64<p> 65 <span class="bold"><strong>Semantics</strong></span>: Return a sequence containing 66 tuples of elements from each sequence. For example, applying zip to tuples 67 <code class="computeroutput"><span class="special">(</span><span class="number">1</span><span class="special">,</span> <span class="number">2</span><span class="special">,</span> 68 <span class="number">3</span><span class="special">)</span></code> 69 and <code class="computeroutput"><span class="special">(</span><span class="char">'a'</span><span class="special">,</span> <span class="char">'b'</span><span class="special">,</span> 70 <span class="char">'c'</span><span class="special">)</span></code> 71 would return <code class="computeroutput"><span class="special">((</span><span class="number">1</span><span class="special">,</span> <span class="char">'a'</span><span class="special">),(</span><span class="number">2</span><span class="special">,</span> <span class="char">'b'</span><span class="special">),(</span><span class="number">3</span><span class="special">,</span> 72 <span class="char">'c'</span><span class="special">))</span></code> 73 </p> 74<h6> 75<a name="fusion.algorithm.transformation.metafunctions.zip.h3"></a> 76 <span class="phrase"><a name="fusion.algorithm.transformation.metafunctions.zip.complexity"></a></span><a class="link" href="zip.html#fusion.algorithm.transformation.metafunctions.zip.complexity">Complexity</a> 77 </h6> 78<p> 79 Constant. 80 </p> 81<h6> 82<a name="fusion.algorithm.transformation.metafunctions.zip.h4"></a> 83 <span class="phrase"><a name="fusion.algorithm.transformation.metafunctions.zip.header"></a></span><a class="link" href="zip.html#fusion.algorithm.transformation.metafunctions.zip.header">Header</a> 84 </h6> 85<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">/</span><span class="identifier">zip</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> 86<span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">include</span><span class="special">/</span><span class="identifier">zip</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> 87</pre> 88</div> 89<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 90<td align="left"></td> 91<td align="right"><div class="copyright-footer">Copyright © 2001-2006, 2011, 2012 Joel de Guzman, 92 Dan Marsden, Tobias Schwinger<p> 93 Distributed under the Boost Software License, Version 1.0. (See accompanying 94 file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) 95 </p> 96</div></td> 97</tr></table> 98<hr> 99<div class="spirit-nav"> 100<a accesskey="p" href="join.html"><img src="../../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../metafunctions.html"><img src="../../../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="pop_back.html"><img src="../../../../../../../../doc/src/images/next.png" alt="Next"></a> 101</div> 102</body> 103</html> 104
